title: Diffuse leiomyosarcomatosis of the colon.
abstract: Smooth muscle cell tumors of the large bowel excluding the rectum are extremely rare. The case of a 30-year-old patient, who had ulcerative colitis for 5 years, is reported. Because of uncontrollable bleeding a proctocolectomy was performed. Along the whole colon the authors found more than 50 polypous tumors with a diameter up to 5 cm. Histologically all of these tumors were classified as leiomyosarcomas. The authors believe this to be the first reported case of multicentric leiomyosarcoma of the colon and of such a tumor associated with a history of ulcerative colitis.
authors.affiliation: Department of Surgery, University Clinics of Hamburg, West Germany.
authors.forename: C
authors.initials: C
authors.lastname: Zornig
authors.forename: G
authors.initials: G
authors.lastname: Thoma
authors.forename: S
authors.initials: S
authors.lastname: Schröder
mesh_terms: D000328:Adult; D003093:Colitis, Ulcerative / Q000150:complications; D003110:Colonic Neoplasms / Q000209:etiology / Q000473:pathology*; D006801:Humans; D007890:Leiomyosarcoma / Q000209:etiology / Q000473:pathology*; D008297:Male; D009378:Neoplasms, Multiple Primary / Q000473:pathology*